312120033131 has 8 divisors (see below), whose sum is σ = 314895954624. Its totient is φ = 309344353920.

The previous prime is 312120033091. The next prime is 312120033139. The reversal of 312120033131 is 131330021213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312120033131 is a prime.

It is a super-2 number, since 2×312120033131² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (312120033139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3403166 + ... + 3493676.

It is an arithmetic number, because the mean of its divisors is an integer number (39361994328).

Almost surely, 2^312120033131 is an apocalyptic number.

312120033131 is a deficient number, since it is larger than the sum of its proper divisors (2775921493).

312120033131 is a wasteful number, since it uses less digits than its factorization.

312120033131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121141.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 312120033131 its reverse (131330021213), we get a palindrome (443450054344).

The spelling of 312120033131 in words is "three hundred twelve billion, one hundred twenty million, thirty-three thousand, one hundred thirty-one".